Earths Purities Drink, Body and Bath Bentonite Clay that cleanses and heals the body. In fact, many people enjoy bentonite clay benefits by taking internally (by mixing in a drink), on top of using it externally on the skin. On top of being able to draw-out toxins from the body, the clay itself has a range of nutrients. Bentonite clay is known to have an abundance of minerals, including calcium, magnesium, silica, sodium, copper, iron and potassium. When ingested into the body, its vitamins and minerals are absorbed similarly to how a supplement would be. Therefore, some people use it as a supplement since the clay is a natural source of important dietary nutrients.